Characteristic polynomial
$$\begin{equation}\left(\lambda + 1\right) \left(\lambda^{4} + 5 \lambda^{3} + \lambda^{2} - 45 \lambda - 53\right)^{2} \left(\lambda^{8} + 2 \lambda^{7} - 69 \lambda^{6} - 271 \lambda^{5} - 555 \lambda^{4} - 4874 \lambda^{3} - 17607 \lambda^{2} - 68781 \lambda - 75319\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 1\right) \left(\lambda^{4} + 5 \lambda^{3} + \lambda^{2} - 45 \lambda - 53\right) \left(\lambda^{8} + 2 \lambda^{7} - 69 \lambda^{6} - 271 \lambda^{5} - 555 \lambda^{4} - 4874 \lambda^{3} - 17607 \lambda^{2} - 68781 \lambda - 75319\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 2 & 2 & 4 & 3 & 0 & 3 & 0 & 3 & 3 & 3 & 0 & 0 & 4 & 4 & 5 \\ 1 & -1 & 0 & 0 & 1 & 2 & 2 & 2 & 0 & 2 & 0 & 0 & 0 & 0 & 3 & 0 & 4 \\ 1 & 0 & -1 & 0 & 1 & 2 & 0 & 2 & 2 & 2 & 0 & 0 & 0 & 0 & 0 & 3 & 4 \\ 2 & 0 & 0 & 0 & 1 & 0 & 2 & 2 & 2 & 2 & 4 & 0 & 3 & 3 & 3 & 3 & 0 \\ 1 & 1 & 1 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 2 & 2 & 0 & 0 & 0 & 0 & 0 \\ 0 & 1 & 1 & 0 & -1 & -2 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 0 & 3 \\ 0 & 2 & 0 & 1 & 0 & 0 & -1 & 1 & 0 & 0 & 1 & 0 & 2 & 2 & 2 & 2 & 0 \\ 0 & 1 & 0 & 0 & 2 & 1 & 0 & -1 & 0 & 1 & 0 & 0 & 0 & 0 & 2 & 0 & 0 \\ 0 & 0 & 2 & 1 & 0 & 0 & 0 & 0 & -1 & 1 & 1 & 0 & 2 & 2 & 2 & 2 & 0 \\ 0 & 0 & 1 & 0 & 2 & 1 & 0 & 1 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 2 & 0 \\ 0 & 0 & 0 & 1 & 2 & 0 & 1 & 0 & 1 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 2 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 2 & 2 & 3 \\ 0 & 0 & 0 & 0 & 0 & 2 & 1 & 0 & 1 & 0 & -3 & -1 & -2 & 1 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 & -2 & 2 & -2 & 2 & -2 & -3 & 0 & -1 & -1 & -1 & -2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 3 & 2 & 0 & 0 & 4 & 2 & 1 & 0 & 0 & 1 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 2 & 4 & 2 & 1 & 0 & 1 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 2 & 4 & 4 & 0\end{pmatrix}\notag\end{equation}$$